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<blockquote data-quote="HomeY" data-source="post: 1065292" data-attributes="member: 68365">Like your idea <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile&nbsp; &nbsp; :)" loading="lazy" data-shortname=":)" /> i was just doing something similar and i'm wondering if i found the culprit:[ATTACH]146021[/ATTACH]Ran the Pintest from the FastLED library, and the above output confirms that data transfer between PC &lt;&gt; Arduino is working fine.But look @ the results for PIN 23....Leonardo PinMapping can be found <a href="http://arduino.cc/en/Hacking/PinMapping32u4#.Uwdls1JdUVw" target="_blank">here</a>, but i can tell you: PIN 23 = GNDWill give your example a try also.Tried that with delay(2000); and that's working fine. 2 seconds +5V, then 0, and so on <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite8" alt=":D" title="Big Grin&nbsp; &nbsp; :D" loading="lazy" data-shortname=":D" />So, a good thing we can rule out the Arduino so far.The above 'mask invalid' message has me wondering...</blockquote>

[QUOTE="HomeY, post: 1065292, member: 68365"] Like your idea :) i was just doing something similar and i'm wondering if i found the culprit: [ATTACH]146021[/ATTACH] Ran the Pintest from the FastLED library, and the above output confirms that data transfer between PC <> Arduino is working fine. But look @ the results for PIN 23.... Leonardo PinMapping can be found [URL='http://arduino.cc/en/Hacking/PinMapping32u4#.Uwdls1JdUVw']here[/URL], but i can tell you: PIN 23 = GND Will give your example a try also. Tried that with delay(2000); and that's working fine. 2 seconds +5V, then 0, and so on :D So, a good thing we can rule out the Arduino so far. The above 'mask invalid' message has me wondering... [/QUOTE]

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